CN117784351A - Lens device - Google Patents

Abstract

The invention provides a lens device which can be miniaturized in the radial direction compared with a structure in which 1 extension part extends from a main body part. A lens device is provided with: a fixing part fixed on the lens mechanism; and a rotating part rotatably connected to the fixing part. One of the fixed part and the rotating part is provided with a detection component, and the other one of the fixed part and the rotating part is provided with a detected component and a substrate. The member to be detected includes a main body portion having a rotation index and a plurality of extension portions extending from the main body portion. The plurality of extensions are connected to the substrate.

Description

Lens device

Technical Field

The present technology relates to a lens device.

Background

Patent document 1 discloses a lens barrel having a function of displacing a lens in a direction orthogonal to an optical axis. The lens barrel includes a1 st component, a 2 nd component, an in-lens first circuit board, and an in-lens second circuit board. The 1 st member is also stationary with respect to the camera when the lens is displaced in a direction orthogonal to the optical axis. The 2 nd part relatively moves relative to the 1 st part during displacement operation. The first circuit board in the lens is connected with the camera side circuit. The second circuit substrate in the lens is connected with the first circuit substrate. The 2 nd member is provided with an opening for passing the object light. The first and second circuit boards are mounted on the 2 nd member in a plane orthogonal to the optical axis, and are disposed at opposite positions across the opening in the displacement operation direction.

Patent document 2 discloses a lens device including: a lens; a1 st base member; and a holding frame holding the lens and having a flange surface intersecting the optical axis of the lens. The 1 st base member is provided with a1 st inclined surface having an acute angle with respect to the flange surface, and the holding frame is fixed to the 1 st base member by an adhesive provided between the 1 st inclined surface and the flange surface.

Patent document 3 discloses an aperture device provided with: a diaphragm unit that makes a diaphragm aperture variable; an aperture preset unit that presets an aperture unit to a set aperture value; and a diaphragm operating unit for operating the opening/closing operation of the diaphragm unit. The diaphragm operating unit performs a reduction operation and a locking operation by the 1 st pressing operation, and performs an unlocking operation and a diaphragm opening operation by the 2 nd pressing operation.

Patent document 1: japanese patent application laid-open No. 2010-266574

Patent document 2: japanese patent laid-open publication No. 2019-032517

Patent document 3: japanese patent laid-open No. 2000-352735

Disclosure of Invention

An embodiment of the present invention provides a lens device that can be miniaturized in the radial direction compared with a structure in which, for example, 1 extension portion extends from a main body portion.

The 1 st aspect of the present invention comprises: a fixing part fixed on the lens mechanism; and a rotating part rotatably connected to the fixed part, one of the fixed part and the rotating part having a detecting member, the other of the fixed part and the rotating part having a detected member and a substrate, the detected member having a main body part having a rotation index and a plurality of extending parts extending from the main body part, the plurality of extending parts being connected to the substrate.

Regarding the 2 nd aspect of the present invention, according to the 1 st aspect, the detecting member includes a contact brush, the detected member includes a flexible flat cable, the index includes a conductor pattern in sliding contact with the contact brush, and each of the extending portions includes a connecting portion connecting the conductor pattern to the substrate.

Regarding the 3 rd aspect of the present invention, the lens device according to the 2 nd aspect is characterized in that the conductor pattern is a gray code-based pattern.

Regarding the 4 th aspect of the present invention, the lens device according to the 2 nd aspect, wherein the conductor pattern includes a ground line and a plurality of signal lines.

Regarding the 5 th aspect of the present invention, the lens device according to the 1 st aspect is characterized in that the fixed portion has a detecting member, and the rotating portion has a member to be detected and a substrate.

Regarding the 6 th aspect of the present invention, according to the 1 st aspect, the plurality of extension portions includes a pair of extension portions that output a signal related to rotation.

Regarding the 7 th aspect of the present invention, according to the 6 th aspect, the 1 st extension portion of the pair of extension portions extends from the 1 st end portion of the main body portion, and the 2 nd extension portion of the pair of extension portions extends from the 2 nd end portion of the main body portion.

Regarding the 8 th aspect of the present invention, according to the 1 st aspect, the main body portion extends in the rotation direction of the rotation portion, and the plurality of extending portions extend from the main body portion toward the center side of the rotation portion.

Regarding the 9 th aspect of the present invention, according to the 1 st aspect, the detecting member is disposed at a position overlapping the substrate in a range where the rotating portion rotates when viewed from the front in the optical axis direction.

Regarding the 10 th aspect of the present invention, according to the 1 st aspect, the substrate extends in the rotation direction of the rotation portion, and the center angle of the substrate is 180 ° or less.

Regarding the 11 th aspect of the present invention, according to the 1 st aspect, the member to be inspected has a1 st area and a 2 nd area, and the plurality of extending portions include a1 st extending portion corresponding to the 1 st area and a 2 nd extending portion corresponding to the 2 nd area.

Regarding the 12 th aspect of the present invention, the lens device according to the 11 th aspect is characterized in that the 1 st and 2 nd areas are determined based on the number of divisions of the index.

Regarding the 13 th aspect of the present invention, the lens device according to the 12 th aspect is characterized in that the number of divisions is 30 or more and 62 or less.

Regarding the 14 th aspect of the present invention, the lens device according to the 1 st aspect is characterized in that the rotatable angle of the rotating portion is 45 ° or more and 135 ° or less.

Regarding the 15 th aspect of the present invention, the lens device according to the 1 st aspect, wherein the rotatable angle of the rotating portion is 90 °.

Regarding the 16 th aspect of the present invention, the lens device according to the 2 nd aspect is characterized in that the conductor pattern includes a ground line and a plurality of signal lines, and the ground line or the signal lines are divided into the 1 st and 2 nd lines.

Regarding the 17 th aspect of the present invention, according to the 16 th aspect, a part of the 1 st line and a part of the 2 nd line overlap in a rotation direction of the rotation portion.

Regarding the 18 th aspect of the present invention, according to the 1 st aspect, there is provided a lens device comprising: a lens mechanism; a tilting mechanism tilting the lens mechanism; a displacement mechanism for displacing the lens mechanism; and a rotation mechanism that rotates at least one of the tilting mechanism and the displacement mechanism around the optical axis direction.

Drawings

Fig. 1 is a perspective view showing an example of an imaging device.

Fig. 2 is a plan view showing an example of the lens device.

Fig. 3 is a side view showing an example of the lens device.

Fig. 4 is a cross-sectional view showing an example of the lens device.

Fig. 5 is a cross-sectional view showing an example of the lens mechanism.

Fig. 6 is a cross-sectional view showing an example of the displacement mechanism and the rotation mechanism.

Fig. 7 is a front view showing an example of the rotating portion.

Fig. 8 is a rear view showing an example of the rotating portion.

Fig. 9 is a front view showing an example of a flexible substrate.

Fig. 10 is a rear view showing an example of a substrate.

Fig. 11 is an exploded perspective view showing an example of the fixed portion and the rotating portion.

Fig. 12 is an exploded perspective view showing an example of the fixed portion and the rotating portion.

Fig. 13 is a schematic view showing an example of a contact state of the contact brush with the flexible substrate.

Fig. 14 is a schematic diagram showing a modification of the flexible substrate.

Detailed Description

In the description of the present invention, "orthogonal" refers to orthogonal in the sense that it includes an error generally allowed in the technical field to which the technique of the present invention belongs, and an error to the extent that the technical spirit of the present invention is not violated. In the description of the present invention, "parallel" refers to parallel in the sense that it includes an error generally allowed in the technical field to which the technique of the present invention belongs, and an error to the extent that the technical spirit of the present invention is not violated. In the description of the present specification, "equidistant" refers to not only completely equidistant but also equidistant in a sense including an error generally allowed in the technical field to which the technique of the present invention belongs and an error to an extent that does not deviate from the technical spirit of the present invention.

First, a configuration of an imaging device 10 according to an embodiment of the present invention will be described.

Fig. 1 is a perspective view of an imaging device 10 according to the present embodiment. As an example, as shown in fig. 1, an imaging device 10 includes a lens device 12 and an imaging device body 14. The lens device 12 is provided at the front of the image pickup device body 14. Fig. 1 schematically illustrates a lens apparatus 12 and an imaging apparatus main body 14. An image sensor (not shown) and a computer (not shown) are incorporated in the imaging device main body 14. Regarding the lens device 12, an arrow a side represents an objective lens side, and an arrow B side represents an imaging side. The optical axis OA is the optical axis of the lens device 12. Hereinafter, the axial direction of the optical axis OA is referred to as "optical axis direction".

In fig. 2, a top view of the lens arrangement 12 is shown, and in fig. 3, a side view of the lens arrangement 12 is shown. Fig. 4 is a cross-sectional view of the lens device 12 taken along line F4-F4 in fig. 2. As an example, as shown in fig. 2 to 4, the lens device 12 includes a lens mechanism 16, a tilting mechanism 18, a displacement mechanism 20, a rotation mechanism 22, and a bayonet 24.

The lens mechanism 16 has a focus ring 26. The focus ring 26 is formed in a ring shape around the optical axis direction. The focus ring 26 is rotatable about the optical axis direction.

The tilting mechanism 18 is a mechanism that tilts the lens mechanism 16. The tilt mechanism 18 has a tilt base 28, a tilt table 30, a tilt lock 32, and a tilt knob 34. The boundary 36 is the boundary between the tilt base 28 and the tilt table 30. The boundary 36 is formed in an arc shape around a tilt axis (not shown) orthogonal to the optical axis OA. The tilting mechanism 18 operates with the boundary 36 as the starting point.

The tilt table 30 is disposed closer to the objective lens than the tilt base 28. The tilt table 30 is fixed relative to the lens mechanism 16. The tilt base 28 supports the tilt table 30 to be tiltable. Tilting refers to an operation of rotating about a tilting axis. The tilting table 30 is tilted integrally with the lens mechanism 16.

The tilt lock 32 and the tilt knob 34 are shaft-shaped members. The tilt lock 32 is configured such that the axial direction of the tilt lock 32 is parallel to the axial direction of the tilt axis. Likewise, the tilt knob 34 is configured such that the axial direction of the tilt knob 34 is parallel to the axial direction of the tilt shaft. A tilt lock 32 and tilt knob 34 are provided on the tilt base 28.

The tilt lock 32 is a component capable of achieving the following states: a locked state of the tilt table 30 is fixed with respect to the tilt base 28; and an unlocked state allowing the tilting table 30 to tilt. The tilt knob 34 is a member for tilting the tilt table 30. A rack and pinion mechanism (not shown) is provided between the tilt knob 34 and the tilt table 30, for example, and the tilt table 30 is tilted by a movement amount corresponding to the rotation amount of the tilt knob 34.

The rotation mechanism 22 is a mechanism that rotates the lens mechanism 16, the tilting mechanism 18, and the displacement mechanism 20. The rotation mechanism 22 has a rotation table 38 and a rotation base 40. The boundary 42 is a boundary between the rotation base 40 and a displacement base 44 described later. The boundary 42 is formed along a plane orthogonal to the optical axis OA. The rotation mechanism 22 operates with the boundary 42 as the starting point.

The rotary table 38 is disposed on the imaging side of the tilt base 28. The rotary table 38 is fixed relative to the tilt base 28. The rotation base 40 is disposed on the imaging side of the displacement base 44. The rotation base 40 supports the displacement base 44 rotatably about the optical axis direction. The lens mechanism 16, the tilting mechanism 18, the rotary table 38, and the displacement mechanism 20 integrally rotate about the optical axis direction. The lens mechanism 16, the tilting mechanism 18, the rotary table 38, and the displacement mechanism 20 are rotated by a user or the like applying a force in the rotation direction. The rotation mechanism 22 is an example of a "rotation mechanism" according to the technology of the present invention.

The displacement mechanism 20 is a mechanism that displaces the lens mechanism 16 and the tilting mechanism 18. The displacement mechanism 20 has a displacement base 44, a displacement table 46, a displacement lock 48, and a displacement knob 50. Boundary 52 is the boundary between displacement base 44 and displacement table 46. The boundary 52 is formed along a plane orthogonal to the optical axis OA. The displacement mechanism 20 operates with the boundary 52 as the starting point.

The displacement stage 46 is disposed on the image side of the rotary stage 38. The displacement table 46 is fixed relative to the rotary table 38. The displacement base 44 is disposed on the imaging side of the displacement table 46. The displacement base 44 supports the displacement table 46 to be displaceable. The displacement is an operation of sliding in a direction orthogonal to the optical axis direction. The displacement table 46 is displaced integrally with the lens mechanism 16, the tilting mechanism 18, and the rotary table 38. As an example, the direction in which the displacement table 46 is displaced (hereinafter referred to as "displacement direction") is set as the up-down direction of the imaging device 10 (see fig. 1).

The displacement lock 48 and the displacement knob 50 are shaft-like members. The displacement lock 48 is arranged such that the axial direction of the displacement lock 48 is parallel to a direction orthogonal to the optical axis direction and the displacement direction. Similarly, the displacement knob 50 is arranged such that the axial direction of the displacement knob 50 is parallel to a direction orthogonal to the optical axis direction and the displacement direction. A displacement lock 48 and a displacement knob 50 are provided on the displacement table 46.

The displacement lock 48 is a component capable of achieving the following states: fixing the locked state of the displacement table 46 with respect to the displacement base 44; and an unlocked state allowing displacement of the displacement table 46. The displacement knob 50 is a member for displacing the displacement table 46. For example, a rack and pinion mechanism (not shown) is provided between the displacement knob 50 and the displacement base 44, and the displacement table 46 is displaced by a displacement amount corresponding to the rotation amount of the displacement knob 50.

The bayonet 24 is provided at the end of the imaging side of the lens mechanism 16. The bayonet 24 is fixed relative to the swivel base 40. The bayonet 24 is attached to a bayonet (not shown) provided in the imaging device main body 14 (see fig. 1). The lens device 12 is fixed to the front of the image pickup device body 14 by fitting the bayonet 24 to a bayonet provided in the image pickup device body 14.

In fig. 5, a longitudinal section through the lens mechanism 16 is shown. As an example, as shown in fig. 5, the lens mechanism 16 includes: lens 160, lens 2 62, lens 3 64, lens 1 frame 66, lens 2 frame 68, lens 3 frame 70, moving frame 72, fixing member 74, cam sleeve 76, rotary drum 78, and focus ring 26.

As an example, the 1 st lens 60 is an objective lens, the 2 nd lens 62 is a focusing lens, and the 3 rd lens 64 is a fixed focus lens. The 1 st lens 60 is disposed on the objective lens side of the 2 nd lens 62, and the 3 rd lens 64 is disposed on the imaging side of the 2 nd lens 62.

The 1 st lens 60 is disposed inside the 1 st lens frame 66, the 2 nd lens 62 is disposed inside the 2 nd lens frame 68, and the 3 rd lens 64 is disposed inside the 3 rd lens frame 70. In the present specification, unless otherwise specified, the term "inner side" means "radially inner side". Lens frame 66 holds lens 60 1, lens frame 68 holds lens 62 2, and lens frame 70 holds lens 64 3.

The 1 st lens frame 66 has a1 st frame 80 and a 2 nd frame 82. The 1 st frame 80 is disposed on the objective lens side of the 2 nd frame 82. The 1 st lens 60 is disposed inside the 1 st frame 80 with the lens 60A on the objective lens side, and the 2 nd frame 82 is disposed inside the 1 st lens 60 with the lens 60B on the imaging side.

The 2 nd lens frame 68 has a 3 rd frame 84 and a 4 th frame 86. The 3 rd frame 84 is disposed on the objective lens side of the 4 th frame 86. The 2 nd lens 62 is disposed inside the 4 th frame 86. The 2 nd lens 62 and the 4 th frame 86 are disposed inside the tilting mechanism 18, the displacement mechanism 20, and the rotation mechanism 22 (see fig. 4).

The 3 rd frame 84 is disposed closer to the objective lens than the 2 nd lens 62. The 3 rd frame 84 is disposed outside the 2 nd frame 82 of the 1 st lens frame 66. In the present specification, "outer" means "radially outer" unless the direction is otherwise specified. The lens 60B on the imaging side of the 1 st lens 60 is disposed inside the 3 rd frame 84.

The moving frame 72 is connected to the outside of the 3 rd frame 84. The moving frame 72 is formed of, for example, resin. The fixing member 74 has a fixing frame 88 and a connecting frame 90. The fixing frame 88 is provided on the objective lens side of the coupling frame 90. The fixed frame 88 is disposed outside the movable frame 72. A 3 rd lens frame 70 is fixed to the imaging side end of the connection frame 90. Inside the connection frame 90, the 4 th frame 86 and the 2 nd lens 62 are disposed. The fixing member 74 is fixed to the 1 st lens frame 66.

The cam sleeve 76 is disposed outside the movable frame 72 and the fixed frame 88. The rotary cylinder 78 is coupled to the outside of the cam sleeve 76, and the focus ring 26 is coupled to the outside of the rotary cylinder 78.

The focus ring 26, the rotary cylinder 78, and the cam sleeve 76 are supported rotatably about the optical axis direction with respect to the fixing member 74. The moving frame 72 and the 2 nd lens frame 68 are supported so as to be movable in the optical axis direction with respect to the fixing member 74.

A cam shaft 92 is provided on the moving frame 72. The cam shaft 92 is a shaft-like member extending from the moving frame 72 toward the cam sleeve 76. The fixed frame 88 is disposed between the moving frame 72 and the cam sleeve 76. The cam shaft 92 penetrates the fixed frame 88 and protrudes toward the cam sleeve 76 with respect to the fixed frame 88. A cam groove 94 is formed on a surface (i.e., an inner peripheral surface) of the cam sleeve 76 on the fixed frame 88 side. The cam groove 94 is formed along a spiral extending in the optical axis direction. The cam shaft 92 engages with the cam groove 94.

The cam shaft 92 and the cam groove 94 are formed with a cam mechanism 96 that converts a force acting around the optical axis direction into a force in the optical axis direction. When a user or the like operates the focus ring 26 in the rotational direction, the cam shaft 92 moves along the cam groove 94 in accordance with the rotation of the focus ring 26 and the cam sleeve 76, whereby the moving frame 72 and the 2 nd lens frame 68 move in the optical axis direction.

In fig. 5, 1 cam mechanism 96 is illustrated, and 3 cam mechanisms 96 are provided in the lens device 12. That is, the number of the plurality of camshafts 92 is 3. The 3 camshafts 92 are arranged at equal intervals around the optical axis direction. The cam grooves 94 of the 3 cam mechanisms 96 may be independent or connected.

In fig. 6, a cross-sectional view of the displacement mechanism 20 and the rotation mechanism 22 is shown, taken along the line F6-F6 of fig. 3. As an example, as shown in fig. 6, the turntable 38, the displacement base 44, and the displacement table 46 form a fixing portion 150. The fixing portion 150 is fixed to the lens mechanism 16 (see fig. 2 to 4) described above. The rotation base 40 forms a rotation portion 152 rotatably coupled to the fixed portion 150. The fixing portion 150 is an example of a "fixing portion" according to the technique of the present invention. The turning portion 152 is an example of a "turning portion" according to the technique of the present invention.

Fig. 7 is a front view of the rotating portion 152 as seen from the objective lens side, and fig. 8 is a rear view of the rotating portion 152 as seen from the imaging side. As an example, as shown in fig. 7 and 8, the rotary base 40 has an annular portion 54 formed in an annular shape around the optical axis direction. The annular portion 54 is formed in a plate shape having the optical axis direction as the plate thickness direction.

The fixed portion 150 has a contact brush 154. The contact brushes 154 are fixed to the displacement base 44 (refer to fig. 6). The rotating portion 152 has a flexible substrate 156 and a substrate 158. Hereinafter, the flexible substrate 156 is referred to as "FPC156". FPC is an abbreviation of "Flexible Printed Circuit".

The FPC156 is provided on the objective lens side of the annular portion 54, and the substrate 158 is provided on the imaging side of the annular portion 54. The FPC156 and the substrate 158 are fixed to the spin base 40. The contact brush 154 is disposed closer to the objective lens than the FPC 156. The contact brush 154, the FPC156, and the substrate 158 form a rotation angle detection mechanism 160, and the rotation angle detection mechanism 160 detects the rotation angle of the rotation portion 152 with respect to the fixed portion 150. The contact brush 154 is an example of a "detecting member" according to the technology of the present invention. The FPC156 is an example of a "member to be detected" according to the technology of the present invention. The substrate 158 is an example of a "substrate" according to the technology of the present invention.

Fig. 9 is a front view when the FPC156 is viewed from the objective lens side. The FPC156 has a main body 162, a1 st extension 164, and a 2 nd extension 166. The main body 162 is formed in an arc shape extending in the rotation direction of the rotation portion 152 (see fig. 7). The arrow R direction indicates the rotation direction of the rotation portion 152. The 1 st extension 164 extends from the 1 st end 162A of the body 162 and the 2 nd extension 166 extends from the 2 nd end 162B of the body 162.

The 1 st end 162A is one end of the body 162 in the circumferential direction, and the 2 nd end 162B is the other end of the body 162 in the circumferential direction. The circumferential direction of the main body 162 is a direction that coincides with the rotational direction of the rotational portion 152. More specifically, the 1 st extending portion 164 and the 2 nd extending portion 166 extend from the main body portion 162 toward the center side of the rotating portion 152 (i.e., radially inward of the rotating portion 152). The main body 162 is an example of a "main body" according to the technology of the present invention, and the 1 st extension 164 and the 2 nd extension 166 are examples of a "plurality of extensions" and a "pair of extensions" according to the technology of the present invention.

Fig. 10 is a rear view of the substrate 158 viewed from the imaging side. The base plate 158 is formed in an arc shape extending from the rotation direction of the rotation portion 152 (see fig. 7). The center angle θ of the substrate 158 is set to 180 ° or less. As an example, the substrate 158 is a printed substrate.

The 1 st extension 164 and the 2 nd extension 166 are connected to the substrate 158. Specifically, the substrate 158 has a1 st connector 168 and a 2 nd connector 170. The 1 st connector 168 and the 2 nd connector 170 are mounted on the surface of the imaging side of the substrate 158. The 1 st connector 168 is disposed at a position corresponding to the 1 st extension portion 164, and the 2 nd connector 170 is disposed at a position corresponding to the 2 nd extension portion 166. Extension 1 164 is connected to connector 1 168 and extension 2 166 is connected to connector 2 170.

Fig. 11 and 12 are exploded perspective views showing the fixed portion 150 and the rotating portion 152. As an example, fig. 11 shows a case where the rotation angle of the rotation portion 152 with respect to the fixed portion 150 is 0 °, and fig. 12 shows a case where the rotation angle of the rotation portion 152 with respect to the fixed portion 150 is 90 °.

The rotatable angle of the rotating portion 152 is set to, for example, 45 ° or more and 135 ° or less. Fig. 11 and 12 show an example in which the rotatable angle of the rotatable portion 152 is set to 90 °. The contact brush 154 is disposed at a position facing the FPC156 in the optical axis direction. The contact brush 154 is disposed at a position overlapping the substrate 158 in a range where the rotating portion 152 rotates when viewed from the front in the optical axis direction. That is, the contact brush 154 is disposed at a position overlapping the substrate 158 when viewed from the front in the optical axis direction in a state where the rotating portion 152 is rotated to any rotation angle.

Fig. 13 is a diagram schematically showing an example of a contact state between the contact brush 154 and the FPC 156. In fig. 13, the main body 162 formed in an arc shape is shown as a straight line. Fig. 13 schematically shows the 1 st extension 164 and the 2 nd extension 166 extending from the main body 162. The arrow R direction indicates the rotation direction of the rotation portion 152.

The main body 162 has a conductor pattern 172 indicating a rotation index of the rotating portion 152. The conductor pattern 172 is formed on the objective lens-side surface of the main body 162. The conductor pattern 172 includes a ground line 174 and a plurality of signal lines 176. The ground wire 174 extends linearly in the direction of arrow R. The plurality of signal lines 176 includes a plurality of signal lines 176 connected to the 1 st extension 164, and a plurality of signal lines 176 connected to the 2 nd extension 166.

The number of the plurality of signal lines 176 connected to the 1 st extension 164 is, for example, 6 or more. Similarly, the number of the plurality of signal lines 176 connected to the 2 nd extension 166 is also 6 or more, for example. In the example shown in fig. 13, the number of the plurality of signal lines 176 connected to the 1 st extension portion 164 is 8, and the number of the plurality of signal lines 176 connected to the 2 nd extension portion 166 is 6. The conductor pattern 172 is a gray code based pattern. That is, the ground line 174 and the plurality of signal lines 176 have shapes corresponding to gray codes. The conductor pattern 172 is an example of "index" according to the technique of the present invention.

The 1 st extension 164 has a plurality of 1 st connection portions 178 connecting the plurality of signal lines 176 to the substrate 158, and the 2 nd extension 166 has a plurality of 2 nd connection portions 180 connecting the plurality of signal lines 176 to the substrate 158. As an example, the number of the 1 st connection parts 178 is 8, and the number of the 2 nd connection parts 180 is 6. Further, the 1 st extension 164 has a connection portion 179 that connects the ground line 174 to the substrate 158. The ground line 174 is connected to ground (not shown), and each signal line 176 is connected to a power source (not shown) via a pull-up resistor (not shown).

The body portion 162 has a1 st region 182 and a 2 nd region 184. The 1 st region 182 is a region from the boundary 186 set in the main body 162 to the 1 st end 162A, and the 2 nd region 184 is a region from the boundary 186 to the 2 nd end 162B. As an example, the boundary 186 is located at the center of the body 162 formed in an arc shape in the circumferential direction. Extension 1 164 corresponds to zone 1 182 and extension 2 166 corresponds to zone 2 184.

The 1 st region 182 and the 2 nd region 184 are regions determined based on the number of divisions of the conductor pattern 172. The division number refers to the number of conductor patterns 172 divided in the rotation direction of the rotation section 152 (i.e., the arrow R direction). The broken line L shown in fig. 13 indicates a position where the conductor pattern 172 is divided into a plurality of divided regions.

In each divided region, a pattern corresponding to gray code is formed by the ground line 174 and the plurality of signal lines 176. The number of divisions of the conductor pattern 172 is set to, for example, 30 to 62. In addition, the maximum number of divisions can be set to 135. In fig. 13, there is shown the following example: by setting the number of divisions of the conductor pattern 172 to 61, the 1 st region 182 has 30 divided regions of the conductor pattern 172, and the 2 nd region 184 has 31 divided regions of the conductor pattern 172.

The contact brush 154 has a plurality of contactors 190. The plurality of contactors 190 are electrically connected to each other. As an example, the number of the plurality of contactors 190 is 4. The plurality of contactors 190 are disposed at positions in sliding contact with the conductor patterns 172. Specifically, the 1 st contact 190A of the plurality of contacts 190 is disposed at a position in sliding contact with the ground wire 174, and the 2 nd contact 190B, the 3 rd contact 190C, and the 4 th contact 190D of the plurality of contacts 190 are disposed at a position in sliding contact with the plurality of signal wires 176.

Then, the rotation angle detection mechanism 160 having the above configuration operates as follows. That is, in a state where the plurality of contactors 190 are located in the 1 st region 182, the contact state of the 2 nd contactor 190B, the 3 rd contactor 190C, and the 4 th contactor 190D with the plurality of signal lines 176 is changed according to the rotation angle of the rotation part 152, and thus a signal (i.e., an angle detection signal) corresponding to the contact state is output from the plurality of 1 st connection parts 178 of the 1 st extension part 164.

In a state where the plurality of contactors 190 are located in the 2 nd region 184, the contact state of the 2 nd contactor 190B, the 3 rd contactor 190C, and the 4 th contactor 190D with the plurality of signal lines 176 is changed according to the rotation angle of the rotation part 152, and a signal corresponding to the contact state is outputted from the 2 nd connection parts 180 of the 2 nd extension part 166 and a part of the 1 st connection parts 178.

As an example, the number of the 1 st connection parts 178 is 8, and thus an 8-bit (bit) angle detection signal is output from the 1 st extension part 164. Further, since the number of the 2 nd connection portions 180 is 6 as an example, the 2 nd extension portion 166 outputs a 6-bit angle detection signal.

Specifically, the signal of the L level is outputted from the 1 st connection portion 178 or the 2 nd connection portion 180 corresponding to the signal line 176 connected to the ground line 174 via the contact brush 154 among the plurality of signal lines 176. On the other hand, an H-level signal is output from the 1 st connection portion 178 or the 2 nd connection portion 180 corresponding to the signal line 176 (i.e., the signal line 176 connected to the ground line 174 without passing through the contact brush 154) which is distant from the ground line 174 among the plurality of signal lines 176. The angle detection signal is an example of "a signal related to rotation" according to the technology of the present invention.

Next, effects of the present embodiment will be described.

The lens device 12 according to the present embodiment includes a rotation mechanism 22 that rotates the tilting mechanism 18 and the displacement mechanism 20 in the optical axis direction. Therefore, by rotating the tilting mechanism 18 by the rotation mechanism 22, the direction in which the lens mechanism 16 is tilted can be changed. Further, by rotating the displacement mechanism 20 by the rotation mechanism 22, the direction in which the lens mechanism 16 is displaced can be changed.

The lens device 12 includes a fixing portion 150 fixed to the lens mechanism 16, and a rotating portion 152 rotatably coupled to the fixing portion 150. The fixed portion 150 has a contact brush 154, and the rotating portion 152 has an FPC156 and a substrate 158. The FPC156 includes a main body portion 162 having a conductor pattern 172, a1 st extension portion 164 extending from a1 st end portion 162A of the main body portion 162, and a 2 nd extension portion 166 extending from a 2 nd end portion 162B of the main body portion 162. The 1 st extension 164 and the 2 nd extension 166 are connected to the substrate 158. Therefore, for example, the width dimension of the conductor pattern 172 and the width dimension of the body portion 162 can be reduced as compared with a structure in which 1 extension portion extends from the body portion 162. This can miniaturize the lens device 12 in the radial direction.

The 1 st extending portion 164 has a plurality of 1 st connecting portions 178, and the 2 nd extending portion 166 has a plurality of 2 nd connecting portions 180. Accordingly, the angle detection signal having the number of bits corresponding to the number of the 1 st connection portions 178 can be output from the 1 st extension portion 164, and the angle detection signal having the number of bits corresponding to the number of the 2 nd connection portions 180 can be output from the 2 nd extension portion 166.

The conductor pattern 172 is a pattern based on gray code. Accordingly, the contact state of the contact brush 154 with the conductor pattern 172 changes according to the rotation angle of the rotation portion 152, and thus an angle detection signal corresponding to the gray code can be output.

The contact brush 154 includes a plurality of contactors 190. The plurality of contactors 190 are electrically connected to each other. On the other hand, the conductor pattern 172 has a ground line 174 and a plurality of signal lines 176. The ground line 174 is connected to ground (not shown), and each signal line 176 is connected to a power source (not shown) via a pull-up resistor (not shown). Accordingly, the L-level signal can be output from the 1 st connection portion 178 or the 2 nd connection portion 180 corresponding to the signal line 176 connected to the ground line 174 via the contact brush 154 among the plurality of signal lines 176. On the other hand, the H-level signal can be outputted from the 1 st connection portion 178 or the 2 nd connection portion 180 corresponding to the signal line 176 (i.e., the signal line 176 connected to the ground line 174 without passing through the contact brush 154) which is distant from the ground line 174 among the plurality of signal lines 176.

The contact brush 154 is provided in the fixed portion 150, and the fpc156 and the substrate 158 are provided in the rotating portion 152. Here, the fixed portion 150 has a structure that is more complex than the rotating portion 152, and includes the rotary table 38, the displacement base 44, and the displacement table 46. Therefore, by providing the FPC156 and the substrate 158 on the rotating portion 152 having a simpler structure than the fixing portion 150, for example, the lens device 12 can be miniaturized as compared with the case where the FPC156 and the substrate 158 are provided on the fixing portion 150.

The angle detection signals are output from the 1 st extension 164 and the 2 nd extension 166. Accordingly, in the image pickup apparatus main body 14 (refer to fig. 1), various processes based on the angle detection signal can be performed.

The 1 st extension 164 extends from the 1 st end 162A of the main body 162, and the 2 nd extension 166 extends from the 2 nd end 162B of the main body 162. Therefore, for example, the connection structure between the conductor pattern 172 and the 1 st connection portion 178 and the connection structure between the conductor pattern 172 and the 2 nd connection portion 180 can be simplified as compared with the structure in which the 1 st extension portion 164 and the 2 nd extension portion 166 extend from between the 1 st end portion 162A and the 2 nd end portion 162B in the main body portion 162. Thus, the FPC156 can be miniaturized and the lens device 12 can be miniaturized.

The body 162 extends in the rotation direction of the rotation portion 152, and the 1 st extending portion 164 and the 2 nd extending portion 166 extend from the body 162 toward the center side of the rotation portion 152 (i.e., radially inward of the rotation portion 152). Therefore, for example, the FPC156 can be prevented from protruding radially outward of the rotating portion 152, as compared with a structure in which the 1 st extending portion 164 and the 2 nd extending portion 166 extend from the main body portion 162 to the side opposite to the center side of the rotating portion 152. This can miniaturize the lens device 12 in the radial direction.

The contact brush 154 is disposed at a position overlapping the substrate 158 in a range where the rotating portion 152 rotates when viewed from the front in the optical axis direction. Accordingly, for example, the FPC156 can be disposed closer to the substrate 158 than a structure in which the contact brush 154 is disposed at a position offset from the substrate 158 when viewed from the front in the optical axis direction. Thus, the lengths of the 1 st extension 164 and the 2 nd extension 166 connecting the conductor pattern 172 and the substrate 158 can be shortened, and thus the resistance to noise can be improved.

The base plate 158 extends in the rotation direction of the rotation portion 152, and the center angle θ of the base plate 158 is 180 ° or less. Therefore, for example, compared with a case where the center angle θ of the substrate 158 is larger than 180 °, the lens device 12 can be miniaturized.

The body 162 has a1 st region 182 and a 2 nd region 184. Extension 1 164 corresponds to zone 1 182 and extension 2 166 corresponds to zone 2 184. Accordingly, in a state where the contact brush 154 is located in the 1 st region 182, an angle detection signal corresponding to the rotation angle of the rotating portion 152 can be output from the 1 st connection portions 178 of the 1 st extending portion 164. On the other hand, in a state where the contact brush 154 is located in the 2 nd region 184, a detection signal corresponding to the rotation angle of the rotating portion 152 can be output from the plurality of 2 nd connection portions 180 of the 2 nd extending portion 166.

Next, a modification of the present embodiment will be described.

Fig. 14 shows a modification of the conductor pattern 172. In the modification shown in fig. 14, the ground line 174 is divided into a1 st ground line 174A and a 2 nd ground line 174B. In this way, when the ground line 174 is divided into the 1 st ground line 174A and the 2 nd ground line 174B, for example, as in the example shown in fig. 13, the number of divisions of the conductor pattern 172 can be increased as compared with the case where the conductor pattern 172 has 1 ground line 174 extending in a straight line. This can improve the resolution at the time of detecting the rotation angle of the rotation section 152.

In the example shown in fig. 14, a part 174A1 of the 1 st ground line 174A and a part 174B1 of the 2 nd ground line 174B overlap in the arrow R direction. In addition, as with the ground line 174, any one of the plurality of signal lines 176 may be divided into a1 st signal line and a 2 nd signal line, and a part of the 1 st signal line and a part of the 2 nd signal line overlap in the arrow R direction.

In this way, when a part of the 1 st signal line and a part of the 2 nd signal line overlap in the arrow R direction, the contact brush 154 can output an L-level signal from the 1 st connection portion 178 corresponding to the 1 st signal line or the 2 nd connection portion 180 corresponding to the 2 nd signal line, similarly to the state in which the contact brush 154 is in contact with the ground line 174.

The 1 st ground line 174A is an example of the "1 st line" according to the technology of the present invention, and the 2 nd ground line 174B is an example of the "2 nd line" according to the technology of the present invention. The 1 st signal line is an example of the "1 st line" according to the technology of the present invention, and the 2 nd signal line is an example of the "2 nd line" according to the technology of the present invention.

In the above embodiment, the fixed portion 150 has the contact brush 154, and the rotating portion 152 has the FPC156 and the substrate 158, but the fixed portion 150 may have the FPC156 and the substrate 158, and the rotating portion 152 may have the contact brush 154.

In the above embodiment, the contact brush 154 is used, but a member having the same function as the contact brush 154 may be used.

In the above embodiment, the conductor pattern 172 is provided on the FPC156, but the conductor pattern 172 may be provided on a component other than the FPC 156.

In the above embodiment, the FPC156 is used, but a member having the same function as the FPC156 may be used.

In the above embodiment, the FPC156 has the 1 st extension 164 and the 2 nd extension 166, but the number of extensions of the FPC156 may be 3 or more.

In the above embodiment, the 1 st extension 164 may extend from the 1 st end 162A of the main body 162, and the 1 st extension 164 may extend from a portion other than the 1 st end 162A of the main body 162. Similarly, the 2 nd extension portion 166 extends from the 2 nd end portion 162B of the main body portion 162, but the 2 nd extension portion 166 may extend from a portion other than the 2 nd end portion 162B of the main body portion 162.

In the above embodiment, the 1 st extending portion 164 and the 2 nd extending portion 166 extend from the main body portion 162 to the center side of the rotating portion 152, but may extend from the main body portion 162 to a side different from the center side of the rotating portion 152.

In the above embodiment, the contact brush 154 is disposed at a position overlapping the substrate 158 in a range where the rotating portion 152 rotates when viewed from the front in the optical axis direction, but may be disposed at a position offset from the substrate 158 when viewed from the front in the optical axis direction.

In the above embodiment, the rotation mechanism 22 is a mechanism that rotates the tilting mechanism 18 and the displacement mechanism 20 in the optical axis direction, but it may be a mechanism that rotates either the tilting mechanism 18 or the displacement mechanism 20 in the optical axis direction.

In the above embodiment, the lens device 12 has the tilting mechanism 18, the displacement mechanism 20, and the rotation mechanism 22, but at least one of the tilting mechanism 18, the displacement mechanism 20, and the rotation mechanism 22 may be omitted.

The description and the illustrations described above are detailed descriptions of the portions related to the technology of the present invention, and are merely examples of the technology of the present invention. For example, the description about the above-described structure, function, operation, and effect is a description about one example of the structure, function, operation, and effect of the portion related to the technology of the present invention. Accordingly, it is needless to say that unnecessary parts can be deleted from the description contents and the illustration contents shown above, or new elements can be added or replaced within a range not departing from the technical gist of the present invention. In order to avoid complexity and to facilitate understanding of the technical aspects of the present invention, descriptions concerning technical common knowledge and the like that are not particularly required in terms of the technical aspects that can implement the present invention are omitted from the descriptions and illustrations shown above.

All documents, patent applications and technical standards described in the present specification are incorporated by reference into the present specification to the same extent as if each document, patent application and technical standard was specifically and individually described as being incorporated by reference.

Symbol description

10-image pickup apparatus, 12-lens apparatus, 14-image pickup apparatus main body, 16-lens mechanism, 18-tilt mechanism, 20-shift mechanism, 22-rotation mechanism, 24-bayonet, 26-focus ring, 28-tilt base, 30-tilt table, 32-tilt lock, 34-tilt knob, 36-boundary, 38-rotation table, 40-rotation base, 42-boundary, 44-shift base, 46-shift table, 48-shift lock, 50-shift knob, 52-boundary, 54-annular portion, 60-1 st lens, 62-2 nd lens, 64-3 rd lens, 66-1 st lens frame, 68-2 nd lens frame, 70-3 rd lens frame, 72-shift frame, 74-fixed member, 76-cam sleeve, 78-rotary cylinder, 80-1 st frame, 82-2 nd frame, 84-3 rd frame, 86-4 th frame, 88-fixed frame, 90-linked frame, 92-cam shaft, 94-cam groove, 96-cam mechanism, 150-fixed portion, 152-rotating portion, 154-contact brush, 156-flexible substrate, 158-substrate, 160-rotation angle detecting mechanism, 162-main body portion, 162A-1 st end portion, 162B-2 nd end portion, 164-1 st extension portion, 166-2 nd extension portion, 168-1 st connector, 170-2 nd connector, 172-conductor pattern, 174-ground wire, 174A-1 st ground wire, 174B-2 nd ground wire, 176-signal line, 178-1 st connection, 179-connection, 180-2 nd connection, 182-1 st area, 184-2 nd area, 186-boundary, 190-contactor.

Claims (18)

1. A lens device is provided with:

a fixing part fixed on the lens mechanism; and

A rotating part rotatably connected to the fixing part,

one of the fixed part and the rotating part is provided with a detecting component,

the other one of the fixed part and the rotating part is provided with a detected component and a substrate,

the member to be inspected includes a main body portion having a rotation index and a plurality of extending portions extending from the main body portion,

the plurality of extensions are connected with the substrate.

2. The lens device according to claim 1, wherein,

the detecting member includes a contact brush,

the component to be inspected comprises a flexible flat cable,

the index includes a conductor pattern in sliding contact with the contact brush,

each of the extending portions includes a connection portion connecting the conductor pattern to the substrate.

3. The lens device according to claim 2, wherein,

the conductor pattern is a gray code based pattern.

4. The lens device according to claim 2, wherein,

the conductor pattern includes a ground line and a plurality of signal lines.

5. The lens device according to claim 1, wherein,

the fixing portion is provided with the detecting member,

the rotating portion has the detected member and the substrate.

6. The lens device according to claim 1, wherein,

the plurality of extensions includes a pair of extensions that output signals related to the rotation.

7. The lens apparatus according to claim 6, wherein,

the 1 st extension of the pair of extensions extends from the 1 st end of the main body portion,

the 2 nd extension of the pair of extensions extends from the 2 nd end of the main body portion.

8. The lens device according to claim 1, wherein,

the main body portion extends in a rotation direction of the rotation portion,

the plurality of extension portions extend from the main body portion toward a center side of the rotation portion.

9. The lens device according to claim 1, wherein,

the detection member is disposed at a position overlapping the substrate within a range in which the rotation portion rotates when viewed from the front in the optical axis direction.

10. The lens device according to claim 1, wherein,

the base plate extends in a rotation direction of the rotation portion,

the center angle of the substrate is 180 DEG or less.

11. The lens device according to claim 1, wherein,

the detected part has a1 st area and a 2 nd area,

the plurality of extensions includes a1 st extension corresponding to the 1 st region and a 2 nd extension corresponding to the 2 nd region.

12. The lens apparatus of claim 11, wherein,

the 1 st region and the 2 nd region are determined based on the number of divisions of the index.

13. The lens apparatus of claim 12, wherein,

the number of divisions is 30 to 62.

14. The lens device according to claim 1, wherein,

the rotatable angle of the rotating part is more than 45 degrees and less than 135 degrees.

15. The lens device according to claim 1, wherein,

the rotatable angle of the rotating part is 90 degrees.

16. The lens device according to claim 2, wherein,

the conductor pattern includes a ground line and a plurality of signal lines,

the ground line or the signal line is divided into 1 st and 2 nd lines.

17. The lens apparatus of claim 16, wherein,

a part of the 1 st line and a part of the 2 nd line overlap in a rotation direction of the rotation portion.

18. The lens device according to any one of claims 1 to 17, comprising:

the lens mechanism;

a tilting mechanism tilting the lens mechanism;

a displacement mechanism that displaces the lens mechanism; and

And a rotation mechanism that rotates at least one of the tilting mechanism and the displacement mechanism around an optical axis direction.